<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: AutoCompleteDojo.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Controller_Action_Helper_AutoComplete_Abstract
 */
require_once 'Zend/Controller/Action/Helper/AutoComplete/Abstract.php';

/**
 * Create and send Dojo-compatible autocompletion lists
 *
 * @uses       Zend_Controller_Action_Helper_AutoComplete_Abstract
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Controller_Action_Helper_AutoCompleteDojo extends Zend_Controller_Action_Helper_AutoComplete_Abstract {
	/**
	 * Validate data for autocompletion
	 *
	 * Stub; unused
	 *
	 * @param  mixed $data
	 * @return boolean
	 */
	public function validateData($data) {
		return true;
	}
	
	/**
	 * Prepare data for autocompletion
	 *
	 * @param  mixed   $data
	 * @param  boolean $keepLayouts
	 * @return string
	 */
	public function prepareAutoCompletion($data, $keepLayouts = false) {
		if (! $data instanceof Zend_Dojo_Data) {
			require_once 'Zend/Dojo/Data.php';
			$items = array ();
			foreach ( $data as $key => $value ) {
				$items [] = array ('label' => $value, 'name' => $value );
			}
			$data = new Zend_Dojo_Data ( 'name', $items );
		}
		
		if (! $keepLayouts) {
			require_once 'Zend/Controller/Action/HelperBroker.php';
			Zend_Controller_Action_HelperBroker::getStaticHelper ( 'viewRenderer' )->setNoRender ( true );
			
			require_once 'Zend/Layout.php';
			$layout = Zend_Layout::getMvcInstance ();
			if ($layout instanceof Zend_Layout) {
				$layout->disableLayout ();
			}
		}
		
		$response = Zend_Controller_Front::getInstance ()->getResponse ();
		$response->setHeader ( 'Content-Type', 'application/json' );
		
		return $data->toJson ();
	}
}
